Index: lib/Driver/ToolChains/Clang.cpp =================================================================== --- lib/Driver/ToolChains/Clang.cpp +++ lib/Driver/ToolChains/Clang.cpp @@ -2968,7 +2968,7 @@ // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility // argument parsing. - if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) { + if (EmitCodeView) { // DWARFVersion remains at 0 if no explicit choice was made. CmdArgs.push_back("-gcodeview"); } else if (DWARFVersion == 0 && @@ -3567,6 +3567,8 @@ types::ID InputType = Input.getType(); if (D.IsCLMode()) AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView); + else + EmitCodeView = Args.hasArg(options::OPT_gcodeview); const Arg *SplitDWARFArg = nullptr; RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView, Index: test/Driver/codeview-column-info.c =================================================================== --- test/Driver/codeview-column-info.c +++ test/Driver/codeview-column-info.c @@ -0,0 +1,13 @@ +// Check that -dwarf-column-info does not get added to the cc1 line: +// 1) When -gcodeview is present via the clang or clang++ driver +// 2) When /Z7 is present via the cl driver. + +// RUN: %clang -### -c -g -gcodeview %s 2> %t1 +// RUN: FileCheck < %t1 %s +// RUN: %clangxx -### -c -g -gcodeview %s 2> %t2 +// RUN: FileCheck < %t2 %s +// RUN: %clang_cl -### /c /Z7 %s 2> %t2 +// RUN: FileCheck < %t2 %s + +// CHECK: "-cc1" +// CHECK-NOT: "-dwarf-column-info"